USGS Water-Year Summary 2024
02290829502 MO -199. USGS Observation Well near Florida City, FL
Biscayne aquifer
Biscayne Limestone Aquifer
LOCATION - Lat 25°28'04.72", long 80°51'16.30" referenced to North American Datum of 1983, Miami-Dade County, FL, Hydrologic Unit 03090202, approximately 21 mi north of Flamingo in Shark Slough of Everglades National Park.
REVISIONS HISTORY - WDR-US-2010, site 02290829502; 2009 water year revised dates for minimum recorded specific conductance.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 10.1 ft. Upper casing diameter 2 in; top of first opening undefined, bottom of last opening undefined.
DATUM - Land-surface datum is 1 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, distance above land-surface datum not defined, Oct. 2003 to present.
PERIOD OF RECORD - Water levels, salinity, specific conductance, water temperature, October 2003 to September 2011 (daily), October 2011 to current year (discrete measurements).
GAGE - Quarterly water-level measurement with chalked tape. Satellite data collection platform with pressure transducer, specific conductivity, and water temperature probe until December 2011, when equipment was removed, October 1, 2011, discrete water level and water quality sampling implemented. See REMARKS.
EXTREMES FOR PERIOD OF RECORD - WATER-LEVEL ELEVATION: Highest daily maximum water level, 1.83 ft NAVD, Sept. 22, 2005; lowest, 1.15 ft below NAVD, Apr. 28, 2009.
WATER-LEVEL ELEVATION: Highest water level measured, 1.59 ft NAVD, Oct. 9, 2008; lowest, 0.82 ft below NAVD, Apr. 30, 2004.
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 10.1 ft. Upper casing diameter 2 in; top of first opening undefined, bottom of last opening undefined.
DATUM - Land-surface datum is 1 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, distance above land-surface datum not defined, Oct. 2003 to present.
INSTRUMENTATION - Quarterly discrete water quality sampling.
EXTREMES FOR PERIOD OF RECORD - SALINITY: Maximum recorded, 0.8 ppt, May 16,18-20,2008; lowest,0.5 ppt, multiple days in 2004, 2007, 2009, 2010, and 2011.
SALINITY: Maximum measured salinity, 0.7 ppt, June 4, 2012; lowest, 0.6 ppt, Mar. 15, 2012, Aug. 30, 2012.
SPECIFIC CONDUCTANCE: Maximum recorded, 1,710 uS/cm @25°C, May 18, 2008; lowest, 1,050 uS/cm @25°C, Jan. 30 to Apr. 1, 2011.
SPECIFIC CONDUCTANCE: Highest measured specific conductance, 1,260 uS/cm @25°C, Aug. 30, 2012; lowest, 1,240 uS/cm @25°C, Mar. 15, 2012, June 4, 2012.
WATER TEMPERATURE: Maximum recorded, 27.3°C, Oct. 26-31, 2003 and Nov. 1, 2003; lowest, 22.7°C, Mar. 6, 2010.
WATER TEMPERATURE: Highest measured temperature, 26.4°C, Aug. 30, 2012; lowest, 23.8°C, Mar. 15, 2012.